CVE-2026-7774

EUVD-2026-34282
tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
PSFCNA
6.9 MEDIUM
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 45%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
pythoncpython
𝑥
< 3.13.14
CNA
pythoncpython
3.14.0 ≤
𝑥
< 3.14.6
CNA
Debian logo
Debian Releases
Debian Product
Codename
pypy3
bookworm
7.3.11+dfsg-2+deb12u3
fixed
bullseye
7.3.5+dfsg-2+deb11u2
fixed
bullseye (security)
7.3.5+dfsg-2+deb11u5
fixed
forky
vulnerable
sid
vulnerable
trixie
no-dsa
python2.7
bullseye
2.7.18-8+deb11u1
fixed
python3.11
bookworm
3.11.2-6+deb12u8
fixed
bookworm (security)
3.11.2-6+deb12u3
fixed
python3.13
forky
3.13.14-1
fixed
sid
3.13.14-1
fixed
trixie
3.13.5-2+deb13u3
fixed
python3.14
forky
3.14.6-1
fixed
sid
3.14.6-1
fixed
python3.9
bullseye
3.9.2-1
fixed
bullseye (security)
3.9.2-1+deb11u7
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
python3.13
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-debug
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-debuginfo
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-debugsource
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-devel
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-freethreading
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-freethreading-debug
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-idle
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-libs
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-test
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.13-tkinter
Amazon Linux 2023
0:3.13.14-1.amzn2023.0.1
fixed
python3.14
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-debug
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-debuginfo
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-debugsource
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-devel
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-debug
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-devel
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-idle
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-libs
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-test
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-freethreading-tkinter
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-idle
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-libs
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-test
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
python3.14-tkinter
Amazon Linux 2023
0:3.14.6-1.amzn2023.0.1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
python3
Azure Linux 3.0
0:3.12.9-13.azl3
fixed
Common Weakness Enumeration
References
https://github.com/python/cpython/commit/0478bd83d82b255e0f29f613367a59d261e7eaa2
https://github.com/python/cpython/commit/0d28f5e46e151718972dfabd91205444d0037b6d
https://github.com/python/cpython/commit/10a13bee3c24f9c62b602e696334ff2272a40efc
https://github.com/python/cpython/commit/578411982c16f753f4893532510099ef665117da
https://github.com/python/cpython/commit/5cf47a248c35c375d610b87b2f72fd1ed454b558
https://github.com/python/cpython/commit/74cca9a92fb7d653e404843a56b8bdc7b0afdbbf
https://github.com/python/cpython/commit/c063191cb7f9170f9565e305f8aa2b79ab2bf609
https://github.com/python/cpython/issues/149486
https://github.com/python/cpython/pull/149487
https://mail.python.org/archives/list/security-announce@python.org/thread/4FU62L2M6RMMHT2QPGQNPEHHUND7CEX5/
http://www.openwall.com/lists/oss-security/2026/06/04/9